Getting the right fuel is crucial. In order to get the maximum output from your boiler, the size and moisture content need to be calculated, and then the supply needs to be consistent and reliable.

Size Classification

Chip Designation Chip Maximum % Particulate Size Maximum Extremes
Designation <4% <20% 60-100% <20% Area cm2 Length cm
G30 <1mm 1-3mm 3-16mm >16mm 3 8.5
G50 <1mm 1-6mm 6-32mm >32mm 5 12
Commercial Wood chip TBC TBC TBC TBC TBC TBC

Moisture Content Classification

Chip Designation Moisture Content in % (wet basis) MC Definition
G30 20-30 Undercover Stored
G50 40-50 Green
Commercial Wood chip TBC TBC


If you would like to discuss your fuel supply and prices please telephone us on 01797 252728